Intersil announced the first three members of its new family of radiation-tolerant plastic-package ICs designed to support the emerging field of small satellites that will provide solutions such as high-speed Internet connections to hundreds of millions of users in communities, governments, and businesses worldwide. Fleets of hundreds of small satellites will create mega-constellation networks to deliver broadband Internet links from low Earth orbit (LEO) to every corner of the globe, including rural areas without wireless connectivity access.

Intersil’s rad-tolerant plastic parts include the ISL71026M 3.3V controller area network (CAN) transceiver, ISL71444M 40V quad precision rail-to-rail input and output (RRIO) op amp, and the ISL71001M 6A point-of-load (POL) voltage regulator. These ICs deliver rad-tolerance performance at a much lower cost point versus radiation assurance tested Class V (space level) products. All three ISL71xxxM devices go through characterization testing, which includes total ionizing doze (TID) up to 30krads (Si) for single event effects (SEE). SEE take into account single event burnout (SEB), single event latch-up (SEL), single event transients (SETs) and single event functional interrupts (SEFIs) at a linear energy transfer (LET) of 43MeV•cm2/mg.

Intersil’s rad-tolerant plastic packaging flow leverages the company’s more than 50 years of spaceflight experience developing rad hard (>75krad) and rad-tolerant (40km) avionic systems, launch vehicles that are prone to heavy ions, and medical equipment where radiation is a concern.

The ISL71026M radiation-tolerant 3.3V CAN transceiver provides serial data transmission at speeds up to 1Mbps. Up to 120 transceivers can be connected to a single CAN bus to reduce cabling/harness size, weight and power (SWAP) costs for satellite command and telemetry systems.

Key Features and Specifications of ISL71444M

· Low current consumption per amplifier of1.1mA typical, and high slew rate of 60V/µs

· Characterized radiation-tolerant to 30krad(Si) and SEE at LET = 43MeV•cm2/mg

The ISL71001M rad-tolerant 6A synchronous buck regulator with integrated MOSFETs delivers high peak efficiency up to 95%, and steps down 5V and 3.3V primary rails to POL inputs as low as 0.8V for FPGAs, CPLDs, DSPs, CPUs and peripheral I/Os.

· Characterized radiation-tolerant to 30krad(Si) and SEE at LET = 43MeV•cm2/mg

Availability

The ISL71026M rad-tolerant 3.3V CAN transceiver is available now in a 5mm x 4.4mm, 14-lead TSSOP package with Ni/Pd/Au-Ag lead finish. For more information and an evaluation board, please visit: www.intersil.com/products/isl71026m.

The ISL71444M rad-tolerant 40V quad op amp is available now in a 5mm x 4.4mm, 14-lead TSSOP package with Ni/Pd/Au-Ag lead finish. For more information and an evaluation board, please visit: www.intersil.com/products/isl71444m.

The ISL71001M rad-tolerant 6A sync buck regulator is available now in a 10mm x 10mm, 64-lead QFP (e-pad) package with Ni/Pd/Au-Ag lead finish. For more information and an evaluation board, please visit: www.intersil.com/products/isl71001m.